K'rrik, Son of Yawgmoth (Commander 2019)

Legendary Creature Ñ Phyrexian Horror Minion - ({B/P} can be paid with either {B} or 2 life.)
Lifelink
For each {B} in a cost, you may pay 2 life rather than pay that mana.
Whenever you cast a black spell, put a +1/+1 counter on K'rrik.